20970560

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^2$

素因数の和:172

約数の個数: 84

約数和(自身を含む): 54545484

約数和(自身を除く): 33574924

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 71, 80, 104, 130, 142, 160, 208, 260, 284, 320, 355, 416, 520, 568, 710, 832, 923, 1040, 1136, 1420, 1846, 2080, 2272, 2840, 3692, 4160, 4544, 4615, 5041, 5680, 7384, 9230, 10082, 11360, 14768, 18460, 20164, 22720, 25205, 29536, 36920, 40328, 50410, 59072, 65533, 73840, 80656, 100820, 131066, 147680, 161312, 201640, 262132, 295360, 322624, 327665, 403280, 524264, 655330, 806560, 1048528, 1310660, 1613120, 2097056, 2621320, 4194112, 5242640, 10485280, 20970560]

約数ペア:

[(1, 20970560), (2, 10485280), (4, 5242640), (5, 4194112), (8, 2621320), (10, 2097056), (13, 1613120), (16, 1310660), (20, 1048528), (26, 806560), (32, 655330), (40, 524264), (52, 403280), (64, 327665), (65, 322624), (71, 295360), (80, 262132), (104, 201640), (130, 161312), (142, 147680), (160, 131066), (208, 100820), (260, 80656), (284, 73840), (320, 65533), (355, 59072), (416, 50410), (520, 40328), (568, 36920), (710, 29536), (832, 25205), (923, 22720), (1040, 20164), (1136, 18460), (1420, 14768), (1846, 11360), (2080, 10082), (2272, 9230), (2840, 7384), (3692, 5680), (4160, 5041), (4544, 4615)]